2 years after an expensive roof shampoo to remove black algae stains from an asphalt roof, the stains are back and now black mold or algae is also covering a retaining wall and patio. Find out how to control Black Algae with annual Roof Armor applications.
roof algae
Black Roof Algae on Retaining Wall Patio and Driveway?
How to remove black streaks from shingles?
Learn about what causes roof shingle stains and streaks. Explore the choice of a DIY roof cleaning product or hiring a professional roof cleaner. Either way your roof can be cleaner!